<form id="form-export-product" method="post" action="<?php echo $this->createUrl('/Shop/admin/product/export'); ?>">
    <input type="hidden" name="exportFileExtension" id="export-to-excel" value="1" />
    <input type="hidden" name="exportType" id="exportType" value="all" />
    <!--<input type="hidden" name="filter[custom_url]" id="filter_custom_url" />
    <input type="hidden" name="filter[category]" id="filter_category" />
    <input type="hidden" name="filter[status]" id="filter_status" />-->
</form>